/Engine/Source/Editor/DataLayerEditor/Public/DataLayer/DataLayerEditorSubsystem.h
Toggles the visibility of all of the DataLayers
void ToggleDataLayersVisibility ( const [TArray](API\Runtime\Core\Containers\TArray)< [UDataLayerInstance](API\Runtime\Engine\WorldPartition\DataLayer\UDataLayerInstance) * > & DataLayers )